forked from OSchip/llvm-project
37eb422f69
This pass eliminates loop iterations that compute results that are not used later on. This can help e.g. in D, where the default zero-initialization is often unnecessary if right after new values are assigned to an array. Contributed-by: Peter Conn <conn.peter@gmail.com> llvm-svn: 201817 |
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README
Polly - Polyhedral optimizations for LLVM ----------------------------------------- http://polly.llvm.org/ Polly uses a mathematical representation, the polyhedral model, to represent and transform loops and other control flow structures. Using an abstract representation it is possible to reason about transformations in a more general way and to use highly optimized linear programming libraries to figure out the optimal loop structure. These transformations can be used to do constant propagation through arrays, remove dead loop iterations, optimize loops for cache locality, optimize arrays, apply advanced automatic parallelization, drive vectorization, or they can be used to do software pipelining.